Factory engineered, mounted, piped and wired for open cooling towers, Smart Shield can be used to protect evaporative cooling water applications. The solid-chemistry, water treatment system provides controlled release and monitored release. The systems incorporate a modular design to simplify installation and minimize the floor space required in the mechanical room for water treatment. Solid chemistry eliminates the potential for liquid spills and reduces shipping, handling and storage weight of chemicals by up to 80 percent. The water treatment system includes all the components required for an effective water treatment system by controlling scale, corrosion and microbiological growth.